Title:
INTERCOM DEVICE
Document Type and Number:
Japanese Patent JP2022059458
Kind Code:
A
Abstract:
To provide an intercom device capable of improving sound quality related to a speaker part with a simple configuration.SOLUTION: A front board 31 and a front insulation cover 33 for covering a rear part of the front board 31 are arranged on a rear surface of a front case 2. The front insulation cover 33 is made to be closer to a rear surface of the front board 31 and also the front insulation cover 33 covers a rear part of a speaker 13. A part of a portion behind the speaker 13 in the front insulation cover 33 is protruded backward so as to arrange a box part 14 which forms a space behind the speaker 13 for sound emission. Thus, an internal space of the box part 14 achieves a function as a so-called enclosure of a speaker unit, thereby to improve sound quality related to the speaker part 10.SELECTED DRAWING: Figure 9
Inventors:
NISHIMORI YUSAKU
MAKINO TOMOYA
MAKINO TOMOYA
Application Number:
JP2020167230A
Publication Date:
April 13, 2022
Filing Date:
October 01, 2020
Export Citation:
Assignee:
AIPHONE CO LTD
International Classes:
H04M1/02; H04M9/00
Attorney, Agent or Firm:
Kyoichi Ueda